5-104550-4 is a double-row vertical surface-mount receptacle from the AMPMODU System 50 interconnection system, designed for board-to-board connections. This 30-position connector features a 0.050 x 0.100 inch (1.27 x 2.54 mm) centerline spacing with dimension A of 0.794 inch (20.17 mm), dimension B of 0.700 inch (17.78 mm), and dimension C of 0.900 inch (22.86 mm). The housing is made of black thermoplastic rated UL 94V-0, with copper alloy contacts featuring duplex plating of 0.000030 inch (0.00076 mm) gold in the mating area, 0.000150 inch (0.00381 mm) tin on solder posts, and 0.000050 inch (0.00127 mm) nickel underplating. This RoHS-compliant connector is packaged in tubes and is ideal for high-density PCB interconnection applications requiring reliable surface-mount assembly.